Find the number of triangles in the given figure.

20

The logic followed here is;

(let's keep in mind the base, means how many triangles are there in the base)

1+2= 03  (AXY) 

1+2= 03  (ABC)

1+2= 03  (ZWU) 

1+2= 03  (TUV)

And, the other triangles are;

VZW, VUW, LXN, YMP, NBQ, PCS, LDX, MEY

Therefore, there are 03+03+03+03+08= 20 triangles in the above figure.